When computer manufactures abandoned the floppy (yes Apple was a visionary), there was a new standard the manufactures all embraced, we got the CD then the DVD. Consumers had a "new option", but this time there is no new standard. There is Apple's Lighting standard and everyone else.
Trending technology changes are hard to predict but I think if Samsung and the other major Android phone manufacturers (Lenovo, LG, Xiaomi, ZTE, Huawei, Yulong, Alcatel, and Vivo) continue to support 3.5mm, there is a chance Apple's move to abandon 3.5mm could backfire. I doubt Hauwei, ZTE, Samsung, Xiaomi, or any other major Android phone manufacture will ever adopt Lighting. Keep in mind, the Android manufactures built/sold about 280 million phones last year (Samsung alone built/sold over 80 million), Apple built/sold about 60 million. Apple is innovative and sometimes others follow, but Lighting is Apple's proprietary standard and I think the Android manufactures will not follow.
Sadly for consumers, I think the mobile device market will be divided into two camps with two competing audio connection standards. We will see the IOS camp embracing Lighting and the Android camp embracing 3.5mm or some other standard that is not Lighting. It will be like MacOS and Windows, two different standards, two very different camps, and a vicious emotional battle between the two camps.